Guai

Pronounced "g-why"; a colloquial Chinese adjective used most often by parents as a statement of their child's good behavior. Also commonly used in English conversation to describe responsible or respectable behavior among friends, or as an informal term for praise.
Me: Dude, I killed that essay. Worked all night without touching Facebook paid off: I got pretty much full score!
Joe: NICE. So guai!
by r4wr89 June 30, 2011
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tymg

A: Here's your teriyaki. Dinner's on me tonight.
B: That's great! TYMG.
by r4wr89 March 03, 2017
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BGBK

Literally, the acronym stands for "Bu Guai Bad Kid", a phrase used to describe a very badly misbehaving child, or, by extension, someone who has jokingly wronged you.
The first two words are pinyin versions of the Chinese for "misbehaving", which, along with the "bad kid" half of the phrase, expresses the extreme misbehavior of said person.
Dude, that guy has owed me lunch for almost a year now. What a freaking BGBK.
by r4wr89 December 06, 2010
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